Pump jack



J- MORTENSEN 7 run? .mcx

Filed Jan. 20. 1923 2 Shoots-Shoot 1 Jacob. Mortensen WITNESS Dec. 1, 1925 1,564,098

J. .MORTENSEN PUMP JACK Filed Jan. 20, 1925 2 Sheets-Sheet 2 Jacob Hortense-n l NVENTOR latented Dec. 1 1925.

UNITED STATES PATENT OFFlCE.

JACOB MORTENSEN, OF MOORHEAD, IOWA.

PUMP JACK.

Application filed January 20, 1923. Serial No. 613,988.

To aZZ whom it may concern:

Be it known that 1, Jason MoirrnNsnN, a citizen of the United States, residing at Moorhead, in the county of Monona and State of Iowa, have invented new and useful Improvements in Pump Jacks, of which the following is a specification.

This invention relates to an improved pump jack, the general object of the invention being to provide means for transmitting the power from a motor or the like to the pump with the minimum amount of strain upon the transmission means so that the pump can be actuated with less power.

Another object of the invention is to enclose the gears of the transmission means in an oil tight casing so that the gears may run in oil and be free from dirt and dust.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claim.

In describing my invention in detail, reference will he had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is a side view showing the invention in use.

Figure 2 is a view taken at right angles to Figure 1.

The remaining figures are detail views.

In these views A indicates the pump, B the motor and C the jack for transmitting the power from the motor to the pump. This jack comprises a frame 1, the crank case 2 and the cover 3, these parts being connected together in an air tight manner. A crank shaft 4 is journaled in the frame and said crank shaft is connected by the gears 5 with a straight shaft 6, also journaled in the frame, and to which the pulley 'Zis connected, said pulley being belted to the pulley of the motor. A pitman 8 is connected with the crank of the shaft i and with the forked end of a lever 9 which is pivoted to the frame at 10. also forked and thisfork is connected to the piston rod of the pump by the connections 11.

From the foregoing it will be seen that the gears are properly lubricated at all times and due to the fact that the pitman is connected with the long end of the lever, the pump rod being connected with the short end, the leverage action is such that a motor of small power can be used to operate the pump.

It is thought from the foregoing description that the advantages and novel features of my invention will be readily apparent.

I desire it to be understood that l may make changes in the construction and in the combii'iation and arrangement of the several parts, provided that such changes fall witlu in the scope of the appended claim.

Vvhat I claim is A pump jack, OODflpl'lSlIlg a rectangular shaped frame horizontallyarranged, legs on the frame, a crank case depcndingfron'i the frame, a crank shaft having its ends journaled in the frame, a power shaft journaled in the frame with one end projecting beyond the frame, a pulley on said projecting end, gears connecting the shafts together, a pitman on the crank of the crank shaft, a lever forked at each end and pivoted to one end of the frame, the inner forked end being connected with the pitman and its outer end being adapted to be connected with a pump and a cover connected with the top of the frame.

In testimony whereof I aflix my signature.

JACOB h'il OR'lENSidl The other end of said lever is 5' 

